Effect of microwave irradiation on ruminal-intestinal disappearance of dry matter and crude protein of safflower seed by in situ and mobile nylon bag techniques

Document Type : Research Paper

Authors

Abstract

BACKGROUND:Based on studies, safflower seeds contain highest levels of linoleic acid among other oilseeds and are produced in certain regions of Iran, it can be used in ruminant nutrition. OBJECTIVES:In this study the effect of microwave irradiation (800 W for 3 min) of safflower seeds on ruminal and intestinal disappearance of dry matter (DM) and crude protein (CP) were determined using in situ and mobile nylon bag techniques. METHODS:For in situ technique two wethers fitted with ruminal cannulas were used. For determination of intestinal disappearance of DM and CP mobile nylon bag technique was used. For this technique one intestinally cannulated Holstein steer was used. RESULTS:Microwave irradiation reduced ruminal disappearance of DM (P<0.05) and CP (numerically). Intestinal disappearance of DM and CP for raw and microwave irradiated safflower seed were 31.4 and 32.2 (for DM) and 28.2 and 31.1 percent (for CP), respectively. Results showed that microwave irradiation increased intestinal disappearance of DM and CP (P<0.05). CONCLUSIONS:Microwave irradiation of whole safflower seed reduced ruminal degradation DM and CP and this is useful in ruminant nutrition. Also, microwave irradiation of whole safflower seed increased small intestinal disappearance of DM and CP. Treated by microwave irradiation was effective methods of changing the site of digestion of DM and CP from rumen to small intestine and therefore the amount of digestible undegraded DM and CP in the small intestine can be increased.

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فتحی نسری م  ح، دانش مسگران م، ولی زاده ر، نیکخواه ع، امامی م ر و هروی موسوی ع ر. 1385. اثر حرارت دادن بر ترکیب شیمیایی، بخش­های نیتروژن، ضرایب تجزیه­پذیری و ناپدید شدن شکمبه­ای-روده­ای ماده خشک و پروتئین خام دو واریته دانه کامل سویا. مجله علمی-پژوهشی علوم و صنایع کشاورزی، جلد 20، شماره 1. صفحه­های 23 تا 35.
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